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A026894 as a simple table

n a(n)
1 1
2 5
3 23
4 106
5 496
6 2361
7 11425
8 56128
9 279530
10 1409242
11 7182570
12 36965292
13 191896092
14 1003889999
15 5288020783
16 28026601758
17 149362212188
18 799947847992
19 4303496405324
20 23245282077346
21 126020035603358
22 685477891161324

[1,5,23,106,496,2361,11425,56128,279530,1409242,
 7182570,36965292,191896092,1003889999,5288020783,
 28026601758,149362212188,799947847992,
 4303496405324,23245282077346,126020035603358,
 685477891161324]

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Last modified October 23 16:20 EDT 2021. Contains 348215 sequences. (Running on oeis4.)